Valorisation of the organic fraction of municipal solid waste

Abstract

The appropriate selection of treatment or final disposal for municipal solid waste generated by a population depends on multiple characteristics; decision-making becomes a challenge for those responsible for its integral management. Therefore, the objective of this research was to evaluate multi-scenarios of valorisation of the organic fraction of municipal solid waste. The methodology used included a sample of 421 houses to determine the generation and composition of the aforementioned municipal solid waste; this data served as input to be able to design four treatment and final disposal scenarios: current situation, composting, anaerobic digestion and landfill. The parameters of humidity, biochemical methane potential and biogas were used. In addition, organic fraction variability and treatment cost were considered. Data analysis included design of experiments with the uncertainty coefficient and predictive equations. The results showed that composting was the scenario that presented the highest coefficient of determination and therefore it would be the best choice to fit the particular conditions of the localities. It is concluded that this applied methodology can be used as a tool in the decision-making process regarding the valorisation of the organic fraction of municipal solid waste and can be replicated at a national and international level.

Elevated biogas production from the anaerobic co-digestion of farmhouse waste: Insight into the process performance and kinetics

“…Begum et al (2018) facilitated high-rate co-digestion of mixed organic wastes and reported positive ramification on the biogas yield. A techno-economic evaluation of pilot AD in continuous mode would be interesting in order to assess other factors than the mixing ratio for full-scale applications (Achinas and Euverink, 2019; Baccioli et al, 2019; Benato and Macor, 2019; Carlini et al, 2017; De Medina-Salas et al, 2019). In addition, we recommend an in-depth analysis of microbiome heterogeneity to assess the activity discrepancies between microbial communities.…”

Production of a Rich Fertilizer Base for Plants from Waste Organic Residues by Microbial Formulation Technology

“…A tiny portion of bio-waste is burned without recovering the abundance of valuable nutrients, and the remainder is landfilled [ 24 ]. The amount of municipal solid trash generated worldwide is estimated to be 1.3 billion Mg/year, and it is anticipated to grow in the coming years [ 25 ]. A significant portion of municipal waste, which includes food waste and green & garden waste (leaves, grass), is organic waste.…”

Clean Utilization of Organic Solid Waste Based on Pyrolysis Technology

“…Organic solid waste heat treatment technology mainly includes incineration technology and pyrolysis technology. Incineration is an organic solid waste heat treatment technology that burns organic solid waste directly as fuel in the boiler or is mixed with coal/biomass and then sent to the boiler for combustion, so that the combustible components in the organic solid waste undergo rapid oxidation reaction and release energy [10][11]. Although incineration technology can quickly reduce and recycle domestic waste, the inorganic components in organic solid waste are converted into incineration bottom slag and fly ash after incineration, forming environmentally hazardous waste.…”